/*
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 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package lookMessage;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.ResultSet;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.*;
import java.util.ArrayList;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.servlet.http.HttpSession;
import javax.swing.JOptionPane;
import loginRegister.LoginBean;

/**
 *
 * @author DELL
 */
public class UpdatePasswordServlet extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code>
     * methods.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet UpdatePasswordServlet</title>");
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet UpdatePasswordServlet at " + request.getContextPath() + "</h1>");
            out.println("</body>");
            out.println("</html>");
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    public void wrong1() {

        String msg = new String("不能为空，请输入完整！");
        String title = new String("提示消息");
        int type = JOptionPane.YES_NO_CANCEL_OPTION;
        JOptionPane.showMessageDialog(null, msg, title, type);
    }

    public void wrong2() {

        String msg = new String("两次密码不一致！");
        String title = new String("提示消息");
        int type = JOptionPane.YES_NO_CANCEL_OPTION;
        JOptionPane.showMessageDialog(null, msg, title, type);
    }

    public void right() {

        String msg = new String("修改成功！");
        String title = new String("提示消息");
        int type = JOptionPane.YES_NO_CANCEL_OPTION;
        JOptionPane.showMessageDialog(null, msg, title, type);
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        String password1 = new String(request.getParameter("password1").getBytes("ISO-8859-1"), "UTF-8");
        String password2 = new String(request.getParameter("password2").getBytes("ISO-8859-1"), "UTF-8");

        if (password1.length() == 0 || password2.length() == 0) {
            wrong1();

            response.sendRedirect("http://localhost:8081/PersonInforMSys/lookMessage/updatePassword.jsp");
        } else if (!(password1.equals(password2))) {

            wrong2();

            response.sendRedirect("http://localhost:8081/PersonInforMSys/lookMessage/updatePassword.jsp");

        } else {

            try {

                Connection con = null;
                java.sql.Statement stmt = null;
                ResultSet rs = null;
                Class.forName("com.mysql.jdbc.Driver");

                String url = "jdbc:mysql://localhost:3306/person";

                con = DriverManager.getConnection(url, "skyline", "739349");

                stmt = con.createStatement();

                String userName = null;
                HttpSession session = request.getSession();
                ArrayList login = (ArrayList) session.getAttribute("login");

                if (login == null || login.size() == 0) {

                    response.sendRedirect("http://localhost:8081/PersonInforMSys/main/bottom.jsp");
                } else {
                    for (int i = login.size() - 1; i >= 0; i--) {

                        LoginBean mbean = (LoginBean) login.get(i);
                        userName = mbean.getUserName();

                    }
                }

                String sql = "update  user   set password='" + password1 + "'where userName='" + userName + "'";

                stmt.executeUpdate(sql);
                String sql2 = "select * from user where userName='" + userName + "'";

                rs = stmt.executeQuery(sql2);
                LoginBean mm = new LoginBean();
                while (rs.next()) {
                    mm.setUserName(rs.getString("userName"));
                    mm.setPassword(rs.getString("password"));

                }
                
                
                ArrayList login2 =null;
                    login2=new ArrayList();
                login2.add(mm);

                session.setAttribute("login", login2);
                rs.close();
                stmt.close();
                con.close();
                right();
                response.sendRedirect("http://localhost:8081/PersonInforMSys/lookMessage/lookMessage.jsp");

            } catch (Exception e) {
            }
        }

    }

    /**
     * Handles the HTTP <code>POST</code> method.
     *
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doGet(request, response);
    }

    /**
     * Returns a short description of the servlet.
     *
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>

}
